Water-meter.



PATENTED NOV. 14, 1905.

B. LEZGUS.

WATER METER.

APPLICATION LED PR-B, 1905.

UNITED STATES PATENT OFFICE.

WATER-METER.

Specification of Letters Patent.

Patented Nov. 14, 1905.

Application filed April 6,1905- Serial No. 254,195.

To all whom it may concern.-

Be it known that 1, LoUIs Lnzeus, a subject of the King of Prussia,German Emperor, residing at Hagen, WVestphalia, Germany, have inventedcertain new and useful Improvements in Water-Meters, of which thefollowing is a specification.

This invention relates to a water-meter having a divided passage for thewater and two paddle-wheels coupled together.

VVell-known water-meters have the drawback that when the supply-cock isopen only to a slight extent--that is to say, when the pressure is onlysmall and the speed of flow also smallthey give false indications. Thisfault goes so far that the meters sometimes stand quite still whilethere is water flowing through them. In some constructions this is dueto the fact that the paddle-wheels have too much play in the casing orare arranged too far away from the water-inlet and that the water isdeviated too much from the direction it had at the admission. In otherconstructions in which a closed casing is employed the paddle-wheels arewithout a canal for a distance greater than half the circumference, thisbeing necessary on account of the filling and draining of the chambers.It happens then that two adjoining chambers are filled simultaneouslyand the paddle-wheel is caused to rotate backward, as, owing to themissing resistance of the measuring apparatus, it runs easier.

In the apparatus according to this invention there is absolutely nofilling of paddle-wheel chambers, water is supplied by means of twocanals of rectangular cross-section to two paddle-wheels positivelyconnected together in which at the outside only a a quarter of thecircumference is lying free, and the jets of water strike the vanes atright angles. As definite quantities of water correspond to definitespeeds of flow of water, the said quantities of water rotating thepaddle-wheels always with definite speeds, the measurement takes placewithout the filling of the chambers between the vanes by the number ofthe revolutions of the wheels. In dividing the water admitted there isthe advantage that shocks taking place in the water-pipe areconsiderably reduced by the sudden change of direction before admissionand by the great friction in the flatadmission-oanals to thepaddle-wheels, so that they exercise only a small influence on thepaddle-wheels.

In the accompanying drawings, Figure l is a longitudinal section; Fig.2, a section on A B, Fig. 3, a cross-section, and Fig. 4: a plan of adetail.

In a casing 60, having a cover D screwed therein and also having aninlet branch 6 and an outlet branch 0, is secured an insertion 6,provided with two round holes (Z. This insertion e is provided at thecircumference with a circular groove f, which, together with the Wall ofthe casing, forms rectangular canals for admission and discharge ofwater.

E indicates a check-valve located in the inlet branch L.

In the holes (Z are arranged paddle-wheels g, the vanes of which arestruck by the waterjets, the said wheels being mounted on spindles whichare supported at the bottom in the casing to and at the top in acovering-plate h, screwed on the insertion a.

To the inwardly-extending portions of the spindles of the Wheels 9 aresecured toothed wheels 11 and 71: of equal size, which engage with eachother, so that both wheels 9 must always rotate simultaneously and atthe same speed. To the toothed wheel in there is connected a smallerwheel Z, engaging with the wheel m, mounted on the driving-spindle ofthe registering apparatus a of the well-known construction, mounted inthe upper portion of the casing 64.

The working of the measuring apparatus is as follows: On entering, wateris divided in the casing" a into two separately-flowing currents andflows in the direction of the arrows in Fig. 2 direct against the vanesof the paddle-wheels g, whereby the latter are turned without thechambers being filled with water. The currents of water escape on theother side of the paddle-wheels, as indicated by the arrows, and againjoin together in the discharge branch 0. The rotating motion of thepaddlewheels is transmitted by the toothed wheelse' and 7c and Z to thedriving-wheelm of the registering apparatus a.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a water-meter the combination of a casing having inlet and outletports axially arranged on opposite sides thereof, a recessed insertionfitting Within the casing and formed with a circumferential groovecommunicating with the inlet and outlet ports, paddle-wheels mounted inrecesses of said insertion symmetrically to the axis of the casing andextending across the circumferential groove of the insertion, means forinsuring the simul taneous rotation of the paddle-wheels, and means forregistering the number of rotations of the said Wheels.

2. In a water-meter the combination of a casing having inlet and outletports axially arranged on opposite sides thereof, a cylindrical recessedinsertion fitting Within the casing and formed with a circumferentialgroove of rectangular section communicating With the inlet and outletports, paddle-Wheels of equal diameter mounted in the recesses of saidinsertion symmetrically to the axis of the casing and extending acrossthe circumferential groove of the insertion, means for insuring thesimultaneous rotation of the paddle-Wheels and means for registering thenumber of rotations of the said Wheels.

3. In a Water-meter the combination of a cylindrical casing (0 havinginlet and outlet In testimony whereof I have signed my name 4 to thisspecification in the presence of two subscribing Witnesses.

LOUIS LEZGUS.

lVitn esses O'r'ro- Korma,v J. A. RITTERSHAUS.

